Virtual Computing Services Deployment Network

1. A method of managing a computer system providing virtual desktops for a plurality of users, comprising: an instance server executed on a computer defining in computer memory a plurality of computing classes, wherein each computing class of the plurality of computing classes: is associated with a respective per user resource cost for provisioning users in the computing class such that each computing class is associated with a different per user resource cost, the per user resource cost for a particular class indicating a level of provisioning provided to each user assigned to the computing class, and, wherein the instance server associates each user of the plurality of users with a selected computing class of the plurality of computing classes such that at least one first user is associated with a first computing class having a first per user resource cost and at least one second user is associated with second computing class having a second per user resource cost different from the first per user resource cost of the first computing class, the plurality of computing classes comprising at least the first computing class corresponding to a first configuration of computing resources for a first virtual desktop computing environment available on at least one server computer and the second computing class corresponding to a second configuration, different from the first configuration, of computing resources for a second virtual desktop computing environment available on the at least one server computer; the instance server continually storing, in a database in computer storage, a usage history for each user in the plurality of users, the usage history of each user of the plurality of users being indicative of usage of the computing resources for the corresponding virtual desktop computing environment on the at least one server computer by a remote computer used by the user; a provisioner, executed on a computer with a computer processor, that selects a particular computing class for each user, wherein the selecting for each user comprises: analyzing the usage history for the user, wherein the usage history defines a user profile of the user indicative of computing demands of the user to determine a provisioning cost of the user, and selecting a particular computing class of the plurality of computing classes based on i) the provisioning cost of the determined from the user profile and ii) the respective per user resource costs determined for provisioning users in each of the computing classes such that the selected computing class provides a level of provisioning for the user that does not overprovision or underprovision the user based on the computing demands of the user; the instance server provisioning the virtual desktop computing environment for each user according to the computing class selected for the user, wherein provisioning includes instantiating each respective virtual desktop computing environment using a portion of the available computing resources on the at least one server computer, the portion being defined by the computing class for the user and including memory and central processor resources of the at least one server computer, thereby provisioning a plurality of virtual desktop environments on the at least one server computer for use by the plurality of users, and enabling the remote computer associated with and used by the user to remotely use the corresponding virtual desktop computing environment, such that applications and central processor computations of a personal computer desktop environment are executed within the virtual desktop computing environment on the at least one server computer, including presenting a desktop user interface representing the virtual desktop computing environment on the remote computer wherein input from and output to the remote computer is provided over a computer network from the at least one server computer to the remote computer; the provisioner periodically reanalyzing an updated usage history of each user in the plurality of users to selectively update the computing class, selected from among the plurality of computing classes, associated with each user; and in response to an update of the computing class associated with the user, the instance server reprovisioning the desktop computing environment for the user according to the updated computing class for the user.

2. The method of claim 1 wherein periodically re-analyzing the usage history for each user further comprises: selecting a different computing class for the user if the usage history for the user is indicative of a misprovisioned user.

3. The method of claim 2 wherein the set of computing classes define a balance between overprovisioned and underprovisioned users, an overprovisioned user associated with a higher operational cost than an underprovisioned user, and an underprovisioned user associated with a higher support cost than an overprovisioned user.

4. The method of claim 3 wherein the operational cost for a user encompasses costs of providing the user with the computing resources, and the support cost for a user encompasses the cost of responding to user inquiries regarding support for the computing resources.

5. The method of claim 4 wherein each user is associated with a provisioning tradeoff threshold, the tradeoff threshold indicating the lowest operation cost supportable without increasing the support cost.

6. The method of claim 3 wherein the set of computing classes includes a grid class providing high performance computing resources, further comprising: identifying using data in a memory internal and external computing resource deployments supporting the grid class; computing, with a processor, a feasibility of provisioning a user with an external computing resource deployment; and selectively associating, with the processor, the user with the grid class based on the computed feasibility.

7. The method of claim 2 , wherein periodically reanalyzing occurs upon a triggering event, the triggering event including a threshold level of at least one of page faults, response time, and processor utilization.

8. The method of claim 1 , wherein the computer system further comprises a plurality of computing resource deployments, each deployment having a network location and operable to provision computing resources for at least one computing class of the set of computing classes, the method further including: identifying one or more of the plurality of computing resource deployments corresponding to the computing class of the user; wherein provisioning a user includes evaluating feasibility of using the one or more computing resource deployments identified for the user according to the computing class of the user, including the network location of the computing resource deployment relative to the user; and selectively modifying the computing resource deployment selected for the user based on the evaluation.

9. The method of claim 1 , wherein periodically analyzing the usage history to associate a computing class with the user further comprises: defining a set of rules, the rules specifying a best fit metric using overprovisioning and underprovisioning thresholds, and determining a computing class for the user independently of determining the computing class of other users.

10. The method of claim 9 wherein each of the rules identifies a computing performance concern and a resource cost concern, the rule further specifying a tradeoff threshold between the performance concern and the resource cost concern.

11. The method of claim 10 wherein: the computing performance concerns include allocated processor speed, allocated memory, allocated disk space; the resource cost concerns include help desk calls, equipment requisitions, and external grid computing requests.

12. The method of claim 9 , wherein the user is re-assigned to a different computing class having a greater per user resource cost based on one or more of the rules.

13. The method of claim 1 , wherein the set of computing classes comprises at least one of: a terminal server class operable to support a plurality of users on a common operating system in a shared memory pool; a hypervisor class providing a dedicated operating system and memory allocation to each user; and a grid class providing high performance computing resources.

14. The method of claim 1 , wherein a first computing class is associated with a first per user resource cost for provisioning each user assigned to the first computing class and a second computing class associated with a second per user resource cost for provisioning each user assigned to the second computing class, wherein the first per user resource cost and the second per user resource cost are different.

15. A computer system providing virtual desktops for a plurality of users, comprising: one or more server computers, each server computer operable to provide computing resources for a virtual desktop computing environment of at least one computing class of a plurality of computing classes, wherein each computing class of the plurality of computing classes: is associated with a respective per user resource cost for provisioning users in the computing class such that each computing class is associated with a different per user resource cost, the per user resource cost for a particular class indicating a level of provisioning provided to each user assigned to the computing class, and, wherein the one or more server computers associate each user of the plurality of users with a selected computing class of the plurality of computing classes such that at least one first user is associated with a first computing class having a first per user resource cost and corresponding to a first configuration of computing resources for a first virtual desktop computer environment, and at least one second user is associated with a second computer class having a second per user resource cost and corresponding to a second configuration of computing resources for a second virtual desktop computing environment different from the first per user cost of the first computing class; a profile database in computer storage configured to accumulate a usage history for each user in the plurality of users, the usage history of each user of the plurality of users being indicative of usage of the computing resources for the corresponding virtual desktop computing environment by a remote computer used by the user; a provisioner, executed on a computer, configured to select a particular computing class for each user, wherein the selecting for each user comprises: analyzing the usage history of the user, wherein the usage history defines a user profile of the user indicative of computing demands of the user to determine a provisioning cost of the user, and selecting a particular computing class of the plurality of computing classes based on i) the provisioning cost of the determined from the user profile and ii) the respective per user resource costs determined for provisioning users in each of the computing classes such that the selected computing class provides a level of provisioning for the user that does not overprovision or underprovision the user based on the computing demands of the user; an instance manager, executed on a computer, configured to provision the virtual desktop computing environment on the one or more server computers for each user in the plurality of users according to the selected computing class associated with the user; the provisioner being configured to periodically reanalyze the usage history of each user in the set of users to selectively reprovision the user, wherein, to provision the virtual desktop computing environment for each user, the instance manager is further configured to instantiate each respective desktop computing environment using a portion of the available computing resources in the one or more server computers, the portion being defined by the computing class of the user and including memory and central processor resources, thereby provisioning a plurality of virtual desktop environments on the one or more server computers for use by remote computers used by the plurality of users, and the instance manager being further configured to enable the remote computer used by the user to remotely use the corresponding virtual desktop computing environment, such that applications and central processor computations of a personal computer desktop environment are executed within the virtual desktop computing environment in the one or more server computers, including presenting a desktop user interface representing the virtual desktop computing environment on the remote computer wherein input from and output to the remote computer used by the user is provided over a computer network from the one or more server computers to the remote computer used by the user.

16. The computer system of claim 15 wherein the provisioner is further configured to: select a different computing class for the user if the usage history for the user is indicative of a misprovisioned user.

17. The computer system of claim 16 wherein the set of computing classes defines a balance between overprovisioned and underprovisioned users, an overprovisioned user associated with a higher operational cost than an underprovisioned user, and an underprovisioned user associated with a higher support cost than an overprovisioned user.

18. The computer system of claim 17 wherein the operational cost for a user encompasses costs of providing the user with the computing resources, and the support cost for a user encompasses the cost of responding to user inquiries regarding support for the computing resources.

19. The computer system of claim 15 further comprising a plurality of computing resource deployments, each deployment having a network location and operable to provision computing resources for at least one computing class of the set of computing classes, the instance manager further comprising: best-fit logic configured to identify one or more of the plurality of computing resource deployments corresponding to the computing class of a user; the best-fit logic further configured to evaluate feasibility of using the identified one or more computing resource deployments for the user including the network location of the computing resource deployment relative to the user; and the instance manager being configured to selectively modify the computing resource deployment selected for the user based on the evaluation.

20. The computer system of claim 19 wherein the provisioner includes: a set of rules, the rules specifying overprovisioning and underprovisioning thresholds, each of the rules identifying a computing performance concern and a resource cost concern, the rule further specifying a tradeoff threshold between the performance concern and the resource cost concern.

21. The computer system of claim 15 wherein the set of computing classes comprises at least one of: a terminal server class operable to support a plurality of users on a common operating system in a shared memory pool; a hypervisor class providing a dedicated operating system and memory allocation to each user; and a grid class providing high performance computing resources substantially greater than the hypervisor class.

22. The computer system of claim 21 wherein the grid class includes external computing resource deployments supporting the grid class, and wherein the provisioner further comprises best fit logic configured to: identify using data in a memory internal and external computing resource deployments supporting the grid class; compute a feasibility of provisioning a user with an external computing resource deployment; and selectively associate the user with the grid class based on the computed feasibility.